Shingle cutter



Aug. 11, 1931. M C, @RST 1,818,397

SHINGLE GUTTER 1 Filed Aug. l5, 1927 .Zzvehfkf Mari/2 C .32111322 Patented Aug. 11, 1931 UNITED STATES MARTIN C. BURST, F LOS ANGELES, CALIFORNIA SHINGLE CUTTER Application filed August 15, 1827. Serial No. 212,972.

This invention relates to cutting and punching mechanism and more particularly pertains to a machine for severing sheet `material such as slate, composition shingles, and the like.

An object of the invention is to provide a machine of' the'above character embodying simple and-efficient means for converting a I rocking motion into a reciprocal motion adapted for use in effecting lever actuation of cutters and punches.

Another object is to provide a portable shingle cutter in which cutting blades may be lever-actuated to effect a shearing action, and in which the cutting blades may be readily removed and replaced. Y

Another object is to provide a blade and blade mounting in a shingle cutter whereby the blade may be formed with a plurality of cutting edges so that as one edge becomes worn the blade may be positioned to present another cutting edge.

Another object is `to provide a shingle severing machine which is operable to out a shingle either along a straight or curved line so as Vto facilitate the fitting of the shingle, and which is adapted to be readily operated bythe shinglers on roofs or scaifolds contiguous to the point of application of the shingles.

A further object is to provide a machine of the above type which may be constructed to be light in weight; in which the moving part-s are ,few and are adapted to bereadily removed and replaced.

With the foregoing objects in view together with such other objects and advantages as may subsequently appear, the invention resides in the parts and features hereinafter described and claimed and illust-rated by Way of example in the accompanying drawings in which: l

Fig. 1 is a side elevation of the complete device, except that portions of the operating handles are broken away tocontract the view;

Fig. 2, is a vertical section on line 2-2 of Fig. 1;

Fig. 3 is a sectional detail on line 3--3 of n0 Fig. 1;

Fig. 4c is a sectional detail on line 4 4 of Fig. 2; Y

Fig. 5 is a transverse section on line 5-5 of Fig. 3; f-

Fig. 6 is a perspective view of a fragment of one of the knives and its carrier to illustrate a modification.

Referring in detail to the drawings the frame of the machine comprises two double standards 7 each having a base or foot portion 8; said standards being secured together in spaced relation to each other by means of an inverted channel iron bar 9 which fits within said standards and is secured in fixed relation thereto by welding or otherwise, at about their mid-height.

rlhe stationary knife 11, is an elongated blade having, in cross section a plurality of angles each of which forms a cutting edge. In the drawings this blade is triangular in cross-section, being removably seated in a dove-tail groove 12 formed in the base of the inverted channel iron 9, which carries said knife 11.

A `movable cutting blade 15 is mounted above and in approximate parallel relation to the stationary cutting blade 12. Said movable blade is carried by the movable channel iron bar 16, being removably seated in a dovetail groove 17, in the base portion of said bar 16, the latter having side flanges 18. Near each end of the bar 16 a transverse pin or shaft 2O connects said flanges 18 and forms a bearing for an anti-friction roller 21, the latter being acted upon vby a circular, eccen tric cam 22 supported by a Vpin or bolt 23, which forms a bearing therefor.

In fixed relation to, or formed as a part of said cam 22, is an operating lever 25, the handle 26of which is desirably formed at an angle to its shank, as shown. In order that the angle iron bar 16 maybe raised as well as depressed by the operationof said lever 25, a pair of metallic stirrups or hanger rings 30 are provided, which at their lower sides are furnishedwith extensions 31 havingy vertically elongated holes 32 to receive shaft 20. Said stirrups embrace the cam 22 one at each side of the lever 25, it being understood that said lever where it joins the cam is of less Width than the latter. The slight vertical elongation of the holes 32 of each stirrup allows the cam 22 to depress the stirrup Without moving the anti-friction roller 21 till the cam engages the latter. Y

At the other end of the machine the parts just described Vare, Iin `the Vina-in, duplicated, and aretherefore similarly lettered inthe drawings, except that 25 designates the operating lever which preferably consists of a short, straight arm and which is loperated by a link or connecting bar l() to Which it is adjustably pivoted by a' pin or bolt 41, the other end of said link being, by a pivot bolt 42, pivoted to operating lever 25, so that When the latter lever is opera-ted, movement will also be communicated to the short lever 25. A plurality of longitudinally spaced pivot holes 45 are provided in link 40 to cooperate With like pivot holes 46' in :th-e lever arm 25. These cooperating pivot holes vprovide for adjustably connecting link 4i@ with arm 25 so itha-t the adjacent end of knife 15 .may be raised or Elowered with relation to its other end, and :thus with relation to the stationary blade 11, said blade 15 may be supported in a more or less inclined or shearing position during its cutting movements.

rlhe appliance is adapted for use in cutting a Yvariety of materials Ybut `is more particularly designed, in the illustrated `embodiment of the invention, for roofers :use in Icutting down the VWidth :and length of composition shingles and for punching nail holes and other apertures through such shingles. The elements which may be :used 'to perform :this punching iiuncti'on are illustrated in Figs. 3, 4l and 5.. Referring to these views, the female element of the punch consists of `a horizontal plate 50 formed as a part of a bracket 51 attachedfriniaaiy desired manner tothe side of :the stationary channel bar 9 at about the mid-length thereof.' The male portion vof this device consists fof an open-ended rectangular upright 'casing .5.5 which lis secured to the side of the upper channel bar 1.6 and moves up and down therewith.A

Across said casing 55 extends .a transverse pivot bolt 5T upon Which are mounted :two eccentric `cams 58 and 59 having Shanks '60 and 161 to receive operating hand-less@ and 63. Said cams are `spaced apart by a spacing nut -64 located on .and at the mid-length of pivot .bolt 57, so lthat cam 58 is positioned to act upon'an anti-friction roller 70 'mounted on a pivot 71 .carried by .a short channel iron head 72 which is provided with a circular punch 73 that cooperates Awith the circular hole 7 5 in the stationary die element to punch nail holes. The other punching element has a corresponding head 72, pivot 71 and roller but its .punch 80 is adapted to cooperate with the rectangular, somewhat elongated hole 8l in the stationary element, so that by punching a .succession kof holes a shingle may be recessed along, for example, a curved line to lit it to a vent pipe or other object. Said punches and are, of course, not the only forms of cutting tools that might be used in the relation set forth.

Each of the punching elements is provided with two stirrups attached to the head 72 (or 72") :and .embracing the cams to lift said heads, the general arrangement of these st1rrups being the same as that of the stirrups 30 first'-descr-i-bed.v The punching device is so arranged that when the cutting blade 15 is in the uppermost position, the punches and punch-holes are in about the spaced relation toeach other shownin Fig. 3. y

4The punching operations may then beperformed Without difficulty. It will l.be seen that the cam, stirrup and anti-friction .roller construction shown in Fig. 3, is .applied to all the various cutting tools that have ,been described, the .punches 7 3 and 80 also being regarded as cutting tools. Trussesare shown to reinforce the channel-iron' bars` 9v yand 51,6, said tri-isses desir-ablyconsisting 'of the rods 9@ .and central angular, braces 19.. l i

In Fig. 6 is shown, as a mod'icatioii, a

channel iron 9, on which are formed spaced opposed pairs -of lugs v Whichinter-lock with .the base poition'of .the triangular cut, ting blade to removably retain'said blade in' place; the opposed lugs forming doveftail channels in which Athe blade is inserted longip tudina'lly.

vIvclaini: i f

l. A cutting device, .comprising a cutting tool, a ycarrier therefor, .an fanti-friction roller pivotally inountedon. said carrier, :a cam `to :act upon said roller :to impart a cutting movement to said tool, and .a .stir-mp mounted .on said carrier and embracing said camto cause the receding movement of Vsaid ca -'into retract said tool, the `stirriip being pro. vided with an elongated opening forreceiving the pivot of the anti-friction-rol-ler soV that the stirrup is prevented from moving the roller before'the cam engages the latter. 2. In a cutting device, a 4channel iron bar having a seat in its base adapted to receive 'a (aittng tool, a pin extending across the cha`nnel of said bar, an anti4fric'tion roller on said pin, an `operating cam to engage said `roller so as to cause a cutting movement of the tool, means to operate said cam, and means conneet-ed with the cam so as to cause the reced ing movement of the cam to retract the tool, the pin being received in the last-mentioned means in such a manner that the latter isprevented from moving the anti-friction roller before the cam engages the roller. 1 3. A cutting device comprising'a frame, a cutting tool, a carrier for said tool slidabfly supported onl said frame, an anti-friction roller pivotally mounted on said carrier,-a

able With said roller to effect movement;fr 139 Said carrier in a downward direction, and a stirrup loosely connected to said carrier and embracing said cam through which said cam will act to move said carrier in an upward direction.

4. A cutting device comprising a frame, a cutting tool, a carrier for said tool slidably supported on said frame, a cam turnably mounted on said frame, a stirrup embracing Y said cam, a loose connection between said stirrup and said carrier to permit relative movement between said stirrup and said carrier, and a bearing on said carrier operatively engageable by said cam to effect movement of said carrier independent of said strrup.

In testimony whereof, I have aliXed my signature.

MARTIN C. I-IURST. 

